/*
 * Copyright (c) 2007, Tim Stack
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Tim Stack nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY TIM STACK ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL TIM STACK BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <assert.h>
#include <string.h>

#include "reflecxx.h"

reflecxx_primitive_t reflecxx_array_get(void *obj,
					struct reflecxx_array *ra,
					unsigned int index)
{
    reflecxx_primitive_t retval;

    assert(obj != NULL);
    assert(ra != NULL);

    memset(&retval, 0, sizeof(retval));
    if (ra->ra_lo <= index && index <= ra->ra_hi) {
	char *cobj = (char *)obj;
	size_t esize;

	esize = reflecxx_sizeof(&ra->ra_element_type);
	cobj += esize * index;
	switch (ra->ra_element_type.rft_type) {
	case RT_STRUCT:
	case RT_UNION:
	case RT_ARRAY:
	    retval.rp_pointer = cobj;
	    break;
	default:
	    memcpy(&retval, cobj, esize);
	    break;
	}
    }
    
    return retval;
}

void reflecxx_array_set(void *obj,
			struct reflecxx_array *ra,
			unsigned int index,
			reflecxx_primitive_t value)
{
    assert(obj != NULL);
    assert(ra != NULL);
    
    if (ra->ra_lo <= index && index <= ra->ra_hi) {
	char *cobj = (char *)obj;
	size_t esize;
	
	esize = reflecxx_sizeof(&ra->ra_element_type);
	cobj += esize * index;
	switch (ra->ra_element_type.rft_type) {
	case RT_STRUCT:
	case RT_UNION:
	case RT_ARRAY:
	    assert(value.rp_pointer != NULL);

	    if (cobj != value.rp_pointer)
		memcpy(cobj, value.rp_pointer, esize);
	    break;
	default:
	    memcpy(cobj, &value, esize);
	    break;
	}
    }
}
